Long time geek, fangirl, mother, and reader. I've got a lot to say, you might not like it all, but it will be honest and hopefully helpful.
Think People's Guide to Autism is a FANTASTIC website and resource for all things Autism related.
In their TPGA's All Ages Holiday Book Guide post, they list a variety of books (non-fiction, as well as adult and kid's fiction) about autism, or that feature realistic portrayals of Autistic people. Including a Victorian Romance novel featuring an autistic man as the romantic lead (Jennifer Asley's The Madness of Lord Ian Mackenzie).
But also featuring classic books like A Wrinkle in Time, which features a "...female protagonist [who] is a terrific role model for aspie girls."
This list is a great resource if you want to learn more about autism or if you have Autistic people in you're life who might find these books interesting themselves.
I know I've added a bunch of these books to my reading list.